Auth bypass in Kaspersky Endpoint Security
CVE-2020-26200
A component of Kaspersky custom boot loader allowed loading of untrusted UEFI modules due to insufficient check of their authenticity. This component is incorporated in Kaspersky Rescue Disk (KRD) and was trusted by the Authentication Agent of Full Disk Encryption in Kaspersky Endpoint Security (KES). This issue allowed to bypass the UEFI Secure Boot security feature. An attacker would need physical access to the computer to exploit it. Otherwise, local administrator privileges would be required to modify the boot loader component.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Kaspersky Endpoint Security — versions 10, 11.0.0, 11.0.1
- Kaspersky Rescue Disk
- Kaspersky Endpoint Security With The Full Disk Encryption Component Installed — versions 10 SP2 MR2, 10 SP2 MR3, 11.0.0
- Kaspersky Rescue Disk Version — versions All versions prior to 18.0.11.3 (patch C)
Weakness classification (CWE)
References
- support.kaspersky.com/general/vulnerability.aspx (Broken Link)
- github.com/CVEProject/cvelist/blob/master/2020/26xxx/CVE-2020-26200.json (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26200?
- CVE-2020-26200 is a medium-severity vulnerability in Kaspersky Endpoint Security, classified under Improper Authentication. CVSS score: 6.8/10. Published 2021-02-26.
- How severe is CVE-2020-26200?
- Medium severity. CVSS v3 base score is 6.8 out of 10.